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# PTB 9th Class Physics Chapter 5 Solved Questions and Numericals Problems

View and Download the solved questions, solved numerical problems or 9th Class Physics notes of Chapter 5 “Gravitation” of Punjab Textbook Board. These 9th class physics notes of 5th Chapter are according to the new syllabus (2013) of Punjab Boards including Lahore Board, Gujranwala Board, Sahiwal Board, Rawalpindi Board, Faisalabad Board, Multan Board, Bahawalpur Board, Federal Board, DG Khan Board and Sargodha Board. Students of 9th Class of all these board can facilitate from the physics notes given below. You can also download 9th Class Physics Chapter 5 Solved Questions and Numericals Problems.

### Unit 5: Gravitation

By studying this chapter students will be able to: State Newton’s law of gravitation. Explain that the gravitational forces are consistent with Newton’s third law. Explain gravitational field as an example of field of force. Define weight (as the force on an object due to a gravitational field). Calculate the mass of Earth by using law of gravitation. Solve problems using Newton’s law of gravitation. Explain that value of g decreases with altitude from the surface of Earth. Discuss the importance of Newton’s law of gravitation in understanding the motion of satellites.

#### 9th Class Physics Chapter 5 Short Question Answers

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#### 9th Class Physics Chapter 5 Solved Numericals

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Abdullah
2 years ago
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Where is objective

Damia Malik
4 years ago

The answer for numerical 5.9 and 5.10 os different as goven in the book…so os it accurate?

MOMIN KHAN
6 years ago

sir aoa can u please answer me this
at what altitude the value of g would become 1/4 than on the surface?